A new study by researchers at Cardiff University finds that it’s not just the animals on land and sea that are eating plastic. Birds are found to be eating hundreds of plastic debris each day through the food they eat near the river banks.
Scientists believe this is a clear indication that plastic pollutants in rivers have found their way into the wildlife and moving up the food chain rapidly.
Polypropylene, polyester, and nylon are known to pollute rivers.
Researchers at Cardiff University looked at plastic pollutants found in a bird known as a dipper, a bird that dives into rivers in search of underwater insects.
“These iconic birds, the dippers, are ingesting hundreds of pieces of plastic every day,” said Prof Steve Ormerod of Cardiff University’s Water Research Institute to the BBC. “They’re also feeding this material to their chicks.”
According to previous research, half of the insects that live in the rivers of South Wales contain microplastic fragments.
“The fact that so many river insects are contaminated makes it inevitable that fish, birds, and other predators will pick up these polluted prey – but this is the first time that this type of transfer through food webs has been shown clearly in free-living river animals,” said co-researcher Dr. Joseph D’Souza. one of the study’s researchers, to the BBC.
“In almost 40 years of researching rivers and dippers, I never imagined that one day our work would reveal these spectacular birds to be at risk from the ingestion of plastics — a measure of how this pollution problem has crept up on us,” said Ormerod, as iNews in the UK reported.
Recently, another study published in the journal Environmental Pollution found that birds of prey in Florida swallow tiny bits of plastic debris at a rate of hundreds a day, particularly microplastic fragments made of polyester, polypropylene, and nylon, as Sustainability Times reported.
Researchers examined dozens of birds of prey, including hawks, ospreys, and owls from the Audubon Center for Birds of Prey in Florida.
According to the study, out of the 63 birds examined, that represent 8 different species, all of them were found to have microplastics in their GI tract.
“Birds of prey are top predators in the ecosystem and by changing the population or health status of the top predator, it completely alters all of the animals, organisms, and habitats below them on the food web,” said Julia Carlin, the study’s lead author, in a University of Central Florida press release.
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